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NPCC Leadership


The NPCC membership elects a full-time Chair, who holds the office of Constable and the rank of Chief Constable under the Police Reform Act 2002. Sara Thornton is the current Chair of the National Police Chiefs' Council.

Chief Constable Sara Thornton CBE QPM
Chair of the National Police Chiefs' Council

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Sara Thornton is the first Chair of the National Police Chiefs’ Council.

Sara joined the Metropolitan Police Service in 1986 and over the next fifteen years her career alternated between operational postings in West London and strategic roles within New Scotland Yard. She served with Thames Valley Police as Assistant Chief Constable, Deputy Chief Constable and Acting Chief Constable before holding the role of Chief Constable for eight years until March 2015. She has also been Chair of ACPO Intelligence Portfolio, Vice-Chair of ACPO Terrorism and Allied Matters, Director of the Police National Assessment Centre and ACPO Vice-President.

Sara is a member of the Royal College of Defence Studies, the Advisory Board for the Oxford University Centre for Criminology and the International Advisory Board for the Cambridge Executive Police Programme. She is a graduate of Durham University, also holding a Master of Studies (MSt) degree in Applied Criminology and Police Management from Cambridge University alongside honorary doctorates from Oxford Brookes University and Buckinghamshire New University.

Sara was awarded the Queen’s Police Medal in 2006 and made a Commander in the Order of the British Empire in 2011. She has also been recognised with a Career Achievement Award from the Police Training Authority Trustees and the Sir Robert Peel Medal for Outstanding Leadership in Evidence-Based Policing.

Sara can be contacted through:

Vice Chairs

The NPCC Chair is supported by two Vice Chairs, each of whom conduct their NPCC role in addition to their full time operational role as Chief Constables. The Vice Chairs act as peer advisors and provide support to the Chair and deputise in their absence.

Giles York QPM
Chief Constable of Sussex Police


As Chief Constable of Sussex Police, Giles York works closely with the Police and Crime Commissioner, Katy Bourne,and leads the Chief Officer team for Sussex Police.

Giles started his service in Maidstone with Kent Police in 1990.In 2005 Giles was appointed as Assistant Chief Constable with South Wales Police and in 2008 was appointed as Deputy Chief Constable with Sussex Police.

In 2014 he was promoted to Chief Constable for Sussex Police.Giles is the force lead for Diversity and in this role he has established a network of force champions who lead internally and externally for different aspects of diversity. Giles’s work with the diversity champions has led to Sussex Police regularly being in the Stonewall top 100 employers.

He is the National Police Business Area lead for Workforce Futures and the national leadership portfolio within that. Giles led the implementation of the Minerva programme coordinated through the Niche Development Board.This provides the opportunity for some 22 forces to work towards all using common business processes.

He is the SRO for Digital First, identifying the best way for the digital transfer of evidence across the criminal justice system. He is also the national lead for Intellectual Property Crime.

Giles was awarded the Queen’s Policing Medal in the 2015 New Years Honours.

Martin Hewitt QPM
Assistant Commissioner of the Metropolitan Police

Vice Chair MH

Martin Hewitt became Vice Chair of the National Police Chiefs Council in April 2015.

Martin is Assistant Commissioner Professionalism in the Metropolitan Police Service (MPS). He is the NPCC lead for both adult sexual offences and kidnap and extortion. In his current post, Martin leads for professional standards and is the MPS Management Board lead for the forthcoming Public Inquiry into undercover policing.

Martin joined the MPS in 2005, and after being the first head of the newly formed Met Intelligence Bureau, he has served in the ranks of Commander and Deputy Assistant Commissioner with responsibility for gangs, organised crime and specialist crime investigation.

From 1993 to 2005, Martin served in Kent Police where he undertook a number of roles with a focus on detective posts in both crime and counter terrorism.

Prior to his police service, Martin spent seven years as a Commissioned Officer in The Royal Artillery. He is an Associate Fellow of the Royal United Services Institute, and was awarded the Queens Police Medal in the 2014 Birthday Honours.

Martin is married with four children and lives in London.